164458438 has 4 divisors (see below), whose sum is σ = 246687660. Its totient is φ = 82229218.

The previous prime is 164458397. The next prime is 164458453. The reversal of 164458438 is 834854461.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 164458394 and 164458403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41114608 + ... + 41114611.

It is an arithmetic number, because the mean of its divisors is an integer number (61671915).

Almost surely, 2^164458438 is an apocalyptic number.

164458438 is a deficient number, since it is larger than the sum of its proper divisors (82229222).

164458438 is an equidigital number, since it uses as much as digits as its factorization.

164458438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82229221.

The product of its digits is 368640, while the sum is 43.

The square root of 164458438 is about 12824.1349805747. The cubic root of 164458438 is about 547.8799242304.

The spelling of 164458438 in words is "one hundred sixty-four million, four hundred fifty-eight thousand, four hundred thirty-eight".